<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<style>
			.content img{
				width: 50px;
				height: 50px;
			}
			/*--主要的--*/
			.content {
				width: 200px;
				height: 200px;
				display: inline-block;
				vertical-align: middle;
				text-align: center;
				background-color: red;
			}
		</style>
	</head>
	<body>
		<div class="content">
			<img src="img/addFile.png">
		</div>
	</body>
</html>
